There were 19 new active cases recorded across the Hunter New England Health district recorded in the Saturday statistics.

The Tamworth local government area recorded the equal-most cases with the Mid Coast local government area.

There were also two in Lake Macquarie and one in Armidale.

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Hunter New England Health Public Health Physician Dr David Durrheim urged the community to get vaccinated, and urged people who are eligible to get a booster shot.

"Of the 170 active cases, none are receiving care in our hospitals," he said.

Dr Durrheim said the new Omicron variant had been identified in international arrivals to NSW.

"All travellers arriving in NSW who have been in South Africa, Lesotho, Botswana, Zimbabwe, Mozambique, Namibia, Eswatini and Malawi during the 14-day period before their arrival in NSW must enter hotel quarantine for 14 days, irrespective of their vaccination status," he said.

Travellers from other countries must isolate for 72 hours and avoid high risk settings for four further days and undertake PCR testing.

They are also strongly encouraged to get tested 12 days after arrival.

Any passengers arriving from overseas aged 18 years and over who are not fully vaccinated must go directly into 14-day mandatory hotel quarantine.

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